Imaginary Picture of HD 213885 c
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Exoplanet Name : HD 213885 c
Alternate Name : TOI-141 c
Radius (Rjup / Re): 0.2304 (Rjup) 2.5828 (Rearth)
Mass (Mjup / Me): 0.0628 (Mjup) 19.9570 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0568 (AU) 0.0568 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0131
Orbital Period(Observed/Estimated) 4.79 (Days Obs.) 4.78 (Days Est.)
Star Radiation at Atmospheric Boundary: 421661.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1137.3 (K)
Blackbody T 0.3(K) 1068.1 (K)
Blackbody T 0.7(K) 864.2 (K)
Tidally Locked Blackbody T 0.1(K) 1352.5 (K)
Tidally Locked Blackbody T 0.3(K) 1270.2 (K)
Size Class: sub-Neptune-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection : Radial Velocity
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 213885
Alternate Name : TOI-141
Star Distance(LY) : 157.1
Stellar Radius(Rsun) : 1.1 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 3.8 (GY)
Temperature : 5500 (K)
Spectral type : G
Metalicity : -0.0
Absolute Magnitude: 4.6
Apparent Magnitude: 8.0
Right Ascension(RA) 338.9846
Declination (DEC) -59.8647
Hubble Space Telescope Guide Star Catalog (GSC) ID 08829-00603
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+213885+&submit=SIMBAD+search
Open Exoplanet Database Link
HD 213885 c
HD 213885 c

  • HD 213885 c is an exoplanet orbiting the star HD 213885, located about 157.1 light-years (48.2 pc) away from Solar System. Its discovery was publicly announced on 2019.
  • The host star HD 213885 has apparent magnitude of 8.0, with absolute magnitude of 4.6.
  • It is 1.1 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 5500 with its spectral types of G
  • In this planetary system, the extrasolar planet HD 213885 c orbits around the star HD 213885 every 4.8 days with its orbital distance of 0.06 AU ( 8496859.9 km)
  • (Projected orbit of HD 213885 c around its host star HD 213885)


  • The Star HD 213885 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.722 AU ( 107937116.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.997 AU ( 149197301.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.520 AU ( 227343670.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.236 AU ( 334546170.8 km)
  • Radiation at Planetary Boundary of HD 213885 c : 421661.67 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 213885)



  • Kopparapu Recent Venus for Star HD 213885 distance : 0.760 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 213885 distance : 0.963 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 213885 distance : 0.930 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 213885 distance : 1.020 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 213885 distance : 1.714 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 213885 distance : 1.807 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 213885)



  • Original Kopparapu Recent Venus for Star HD 213885 distance : 0.757 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 213885 distance : 0.990 AU
  • Original Kopparapu Moist Greenhouse for Star HD 213885 distance : 1.002 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 213885 distance : 1.743 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 213885 distance : 1.813 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 213885)



    (Position in Stellar Map of star HD 213885 and its Exoplanet HD 213885 c)



    (Zoomed position in Stellar Map of star HD 213885 and its Exoplanet HD 213885 c (zoom level 3))